John a



J. A. & R. LIGHTHALL.

Drying Glue.

No. 77,388. Patented April 28, 1868.

W'it'nesses: Inventors: I

I -PETERS, PHOTO-UTHOGRAPHER, WLSHINGYON D c,

g -M germ @tfiro,

- Lam-i Patent No. 77,388, dated April 28, 1868.

IMPROVEMENT In THE MANUFACTURE or GLUE tilt: same referrer to in iljtfit detachment rut mating mat of the same.

TO ALL WHQMIT MAY CONCERN:

Be it known that we, JOHN A. Licnripitn and REUBEN Lmn'rnlLL, both of the city of Brooklyn, in the county of-Kings, and State of New York, have invented certain new and useful Improvements in the Manufacture of Glue; and we do hereby declare that the following is a full and exact dcscription o'f the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, in which- Figure 1 is an elevation of the apparatus, a portion of theleft-hand side being hroken'away to show more perfectly the arrangement..

Figure 2 is an end view of thc same, and

Figure 3 a detached sectional view of one of the series of platcsnsed. I

In the ordinary process of making glue, the glue-stock, after being properly prepared, is cooled in vessels, and when it has attained a solid state, is cut-into slices or cakes of the ordinary thickness of commerce,.and laid upon nets to bedried. I r p The disadvantages of this process are mainly in the drying-process. As the product is exposed to the atmosphere to produce the drying, it is subject to all the atmospheric changes3-bywhi'chit is sometimes frosen by extreme cold, and again made liquidby eirtreme heat. And again, that in consequence of damp and fogg weather, the stock remains so long' on the nets as to be rotted and rendered worthless, as is the'case with the former conditions named, the stock in either case being worthless, and having no marketable value.

To remedy and overcome the dilhculties and disadvantages above named. is the object and purpose of our invention, which consists of an apparatus, as hereinafter described, by which glue can be made at'all times and all seasons, irrespective of the weatl1er,.and of the condition and state of the external atmosphere; and further, in making such glue of auniform thickness, of such thickness as to be readily dissolved for use, the glue as made by the ordinary-process bei'ng ofsuch thickness as to require a considerable length of time to dissolve it ready for use, whereas the'glne made by our process'is of so much less thickness thatit is readily and quickly dissolved. Besides, the glue, as made by our process, is of. a uniform thickness, which has not been before attained by any other process in the manufactureof glue-of less' thickness than the ordinary glue of commerce, allowing thereby the whole of the glue to be dis'solved and preparedfor use at one and the same time, which in practice is fcund to be a great advantage. l

In the drawings hereuntoatt'ache'd, A A are-two fines, of proper shape and height, which may be made of wood, metal, or brick-work, the size in transv'erse'section being made suitable to the amount of glue required to be cooled and made, and the height so proportionedes to efi'ect the objects hereinafter named. The two flues are secured by any required means to or. upon the reservoir B, which contains the prepared material from which the glueis to be made, and are connected at their top ends with the escape or stack G, through which the 'air escapes, as hereinafter described.

B is the reservoir, into which the prepared material for making the glue is placed, the process up to the point of putting the.pro duct in the reservoir being the same as ordinarily practised. I

D D are two pulleys or drugs, revolved either by hand or by power applied to the pulley E, around which is placed the endless belt I. This b elt may either be made of leather, the same as an ordinary belt for driving machinery, or, as can readily be seen, be made of an endless chain, to;effeo.t the same purpose.

To the exterior of this belt is secured (in any desired way) the series of plates Gite G these plates being madeof thin metal, sheet iron, sheet zinc, sheettin, or sheet brass, of such number to each-set as to nearly fill up the space of the width of the fluesi The object and purpose of making these plates ofthin metal will be further explained below.

which blows its blast of cold air first into the receiver H, and is from thence taken away intothe due at or about the point shown. The quantity of air to be so blown into the flue-is regulated-by the throttle-valve I, and the receiver is provided with a lightly-loaded safety-vitlvfe, J,.so that in case of asurplus quantity being driven into the receiver over what is required to be taken into the flue, the same may escape through and-by'the said valve On the ascending side of the flue, as marked by the dart, ablowing-apparatus of anydesired formis placed,

The object, intent, and purpose of this coldblast of air upon the -plat'es'passing upward: through the flufi is, primarily, to fasten the glue that is taken up by the plates .in their passage through the material in the reservoir 13, so asto prevent the dripping of the material from the same,.in order that the product left upon the plates shall be of an even and uniform thickness; and, secondly, to dissipate and carry off, by the way of the stack 0, a considerable amount of the water contained in the material,

On the-descending side of theflue are located and'placed a similar blowing-apparatus and, receiver, difi'orin'g in-nothing from the former one, except that the blast from this blower is heated to such point as to subserre two distinct purposes, one being the removal of all the balance of contained moisture in the material that is not removed and taken array by the cold blast, and the other being the removal, from the thin plates, ot the perfectly dried glue, which drops ofl" from the plates and is delivered through the spout Ii. The heated air from this blower ascends and is taken off by the stack 0, the combination of the cold and hot blasts with the vapor taken off from the material naturally creatinga very powerful d1 ought, which renders the use of a stack ofgreat height unnecessary. Y

We find in practice the glue, thoroughly dried on thin plates, as above stated, will reddily remove and drop oil from the plates when the proper degree of drying-heat isappli'ed, but it can readily be seen that in case of a slight variation of heat not producing that cfi'ecg thc dried glue can be removed by mechanical means.

. .We do not confine ourselves to the use of tliereceivers before named, as they maypossibly be dispensed with, and the proper supply of air regulated by other means that ivill subscrve the same purpose.

What we claim as .our invention, and desire to secure by Letters Patent, is-

-1. The combination of the series of plates with the belt and driving-pulleys, as and for the purpose set forthl 2. In combination with the series of plates, attached to the belt, as beforc nnmed, the arrangement for blowing a blast ofeold air on the said plates after they have been dipped into the reservoir, for the purpose of preventing the drip from the same, so-that the glue attached to the plates shall be preserved of an equal and uniform thickness.

3. In combination with the series of plates attached to the belt, as before named, the arrangement for blowing a blast of hot air on the said plates do the descending side of the apparatus, for the double purpose of removing from the glue attached to said plates any moisture that may remain in it, and for removinglhe finished glue from the plates, as set forth.

' JOHN A, LIGHTHALL, REUBEN LIGHTHALL.

Witnesses:

FRANCIS J. Low, Win. A. LIGHTHALL. 

